remove unneeded interface

etor/src/main/java/gov/hhs/cdc/trustedintermediary/etor/utils/security/HashHelper.java

@@ -5,15 +5,14 @@
 import java.security.NoSuchAlgorithmException;
 import java.util.HexFormat;
 
-public class HashHelper implements SecureHash {
+public class HashHelper {
 
     private static final HashHelper INSTANCE = new HashHelper();
 
     public static HashHelper getInstance() {
         return INSTANCE;
     }
 
-    @Override
     public String generateHash(Object input) {
         try {
             MessageDigest digest = MessageDigest.getInstance("SHA3-512");